182704domain: NAppears in sequencesExpansion of x/(1 - 4*x - 11*x^2).at n=8A015534Eight white kings and one red king on a 3 X 3 chessboard. G.f.: (1+4*x)/(1 - 2*x - 10*x^2 - 4*x^3).at n=8A179601